Malicious PDF — malware analysis report

Static analysis result for SHA-256 55a270048739e9b3…

MALICIOUS

PDF

67.1 KB Created: 2020-08-07 21:32:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7e939764a5dc385e527c9d2026472773 SHA-1: ef64a32acf6354aa73868adfb25a715812177203 SHA-256: 55a270048739e9b3e79bce3d5179f0723b28cb654d6369525d437a94c2a50aeb
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a large number of embedded links, constituting a link farm. One of these links, https://ttraff.ru/pify?keyword=major+biomes+of+the+world+pdf, points to a known malicious redirector. The document's primary purpose appears to be to lure users into clicking these links, potentially leading them to malicious content or further compromise. No scripts were extracted from this sample.

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.ru/pify?keyword=major+biomes+of+the+world+pdf
    • http://files.sammactavish.ca/uploads/1/3/0/7/130775013/cafb03.pdf
    • http://files.uhriglab.com/uploads/1/3/1/3/131398091/7255423.pdf
    • http://files.kvccfa.org/uploads/1/3/0/9/130969831/58184e46740.pdf
    • http://files.thenotaninfluencer.com/uploads/1/3/0/8/130874063/70a2b0.pdf
    • https://cdn.shopify.com/s/files/1/0428/0179/1132/files/gegenikavawu.pdf
    • https://cdn.shopify.com/s/files/1/0432/2767/6829/files/bezaxetefimuzeb.pdf
    • https://cdn.shopify.com/s/files/1/0441/2784/6552/files/38366472495.pdf
    • https://cdn.shopify.com/s/files/1/0433/6756/3429/files/55272508399.pdf
    • https://cdn.shopify.com/s/files/1/0434/7179/8424/files/pidenodago.pdf
    • https://cdn.shopify.com/s/files/1/0427/7790/3263/files/47103724386.pdf
    • https://cdn.shopify.com/s/files/1/0429/1988/7001/files/81196280153.pdf
    • https://cdn.shopify.com/s/files/1/0435/8311/1336/files/essentials_of_chemical_reaction_engineering_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/8646/2620/files/tivimenazepezorat.pdf
    • https://cdn.shopify.com/s/files/1/0432/4913/9880/files/topemumefisutug.pdf
    • https://cdn.shopify.com/s/files/1/0431/6535/2093/files/5280607651.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bcbb.bin
33fdd355a8fde599cb700047a5b9564cf846c60a378dfec11c95a242ba9655a7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBCBB 5596 bytes
font_01_sfnt_off0000cfb2.bin
9e0b8c493b173943d0c17ad520d64f1172914aab4cc5e4bb9d1d90011d428729		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCFB2 15348 bytes

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